Index: linux-3.10.20/drivers/mtd/ralink/ralink_nand.c
===================================================================
--- linux-3.10.20.orig/drivers/mtd/ralink/ralink_nand.c
+++ linux-3.10.20/drivers/mtd/ralink/ralink_nand.c
@@ -377,7 +377,10 @@ static int nfc_check_wp(void)
 	int ret;
 
 	ret = _nfc_read_status(&result);
-	//FIXME, if ret < 0
+	if (ret) {
+		printk(KERN_WARNING "unable to tell WP. default FALSE.\n");
+		return 0;
+	}
 
 	return !(result & NAND_STATUS_WP);
 #endif
@@ -1332,10 +1335,9 @@ nand_get_device(struct ra_nand_chip *ra,
 	int ret = 0;
 
 #if !defined (__UBOOT__)
-	ret = mutex_lock_interruptible(ra->controller);
+	mutex_lock(ra->controller);
 #endif ///
-	if (!ret) 
-		ra->state = new_state;
+	ra->state = new_state;
 
 	return ret;
 
@@ -2881,7 +2883,7 @@ static int ramtd_nand_writeoob(struct mt
 
 	ra_dbg("%s: \n", __func__);
 
-	nand_get_device(ra, FL_READING);
+	nand_get_device(ra, FL_WRITING);
 
 	ret = nand_do_write_ops(ra, to, ops);